Prepare bulgur according to package instructions; let it cool.
In a large bowl, mix the bulgur with peppermint, parsley, tomatoes, and onion (if using).
Stir in lemon juice and olive oil. Season with salt and pepper.
Let the salad sit for an hour in the fridge for flavors to meld.
Serve chilled, topped with cucumber and feta cheese (if desired).
Notes
Rinse bulgur thoroughly before use to remove any impurities.
• Chop the herbs finely for a more consistent texture.
• Use fresh lemon juice instead of bottled for better flavor.
• Let the salad sit for an hour before serving to enhance flavors.
• Adjust salt and pepper just before serving, as bulgur absorbs seasonings.